| abstract |
A device is disclosed for extracting an entrained product from a fluid stream. The device comprises a flow channel for the fluid stream, a quantity of selectively absorbing material located in the flow channel which is preferebly an LCST polymer, having a first state in which the material is capable of holding a first higher quantity of the product and having a second state in which the material is capable of holding a second lower quantity of the product; and an actuator for selectively switching the material from the first state to the second state whereby product in excess of the second quantity is released. The device is ideally suited for dehumidif ication of moist air. |